From the answer:
Welcome and thanks for posting your concern here in the Community, @ stri8ed .... No, customizing the statement description of the ACH charges from Merchant Services is unavailable in QuickBooks.

From the answer:
Thank you for sharing your feedback towards the latest update of the GoPayment app, GK .... I'll take note of your feedback and use it to improve the flow of adding sales tax in the GoPayment app.